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1.
J. bras. med ; 90(4): 39-41, abr. 2006.
Article in Portuguese | LILACS | ID: lil-480218

ABSTRACT

A irrigação nasal é freqüentemente indicada como medida adjuvante no tratamento de várias afecções que acometem a cavidade nasal e os seios paranasais. Esta revisão foi realizada com o intuito de examinar as evidências recentes quanto à eficácia e benefícios da utilização da solução salina nasal no tratamento das afecções da cavidade nasal e dos seios paranasais. Estudos randomizados e controlados com a utilização de solução nasal hipertônica em pacientes com rinossinusite aguda, crônica, rinite alérgica e sintomas nasais crônicos, têm mostrado melhora significante dos sintomas nasais, escores de qualidade de vida, diminuição da utilização de antibióticos e spray nasal. A irrigação nasal é um procedimento simples, barato, promove alívio dos sintomas associados às doenças nasais e reduz a utilização de medicações.


Subject(s)
Male , Female , Child , Adult , Saline Solution, Hypertonic/administration & dosage , Saline Solution, Hypertonic/pharmacokinetics , Saline Solution, Hypertonic/therapeutic use , Respiratory Tract Infections/therapy , Isotonic Solutions/therapeutic use , Therapeutic Irrigation
2.
Pflugers Arch ; 442(4): 614-21, 2001 Jul.
Article in English | MEDLINE | ID: mdl-11510895

ABSTRACT

The effect of osmotic stress on sugar transport was investigated in Clone 9 epithelial cells, which express the glucose uniporter GLUT1, and in 3T3-L1 adipocytes, which express both GLUT1 and GLUT4. An acute hyperosmotic shock increased the uptake of sugars in both cell types. In Clone 9 cells, this was followed by a regulatory volume increase (RVI) response. Stimulation of transport was rapid and reversible, with half-lives (t 1/2) for stimulation of 2-deoxy-D-glucose uptake of 5.6 +/- 0.9 (n=6) and 22.7 +/- 1.5 (n=4) min for Clone 9 cells and adipocytes respectively. The effect was dose dependent, reaching a maximum at 1.1 osM of 2.9 +/- 0.1-fold (n=3) for Clone 9 cells and 8.2 +/- 0.8-fold (n=3) for adipocytes. In the latter, this stimulation correlated with translocation of the glucose transporter isoform GLUT4 to the cell surface and was not significantly different from that elicited by 160 nM insulin (7.6 +/- 1.2-fold, n=3). The effect of osmotic shock was not, however, influenced by inhibitors of either phosphoinositide 3-kinase (PI 3-kinase) (wortmannin, 250 nM) or of p38 mitogen-activated protein kinase (p38 MAP kinase) (SB203580, 20 microM), which reportedly prevent GLUT4 translocation and/or activation by insulin respectively. These inhibitors also had no effect on the stimulation of transport by osmotic shock in Clone 9 cells. However, in contrast to adipocytes, the effect of osmotic shock on glucose transport in Clone 9 cells reflected primarily a change in the intrinsic activity of cell surface transporters and there was only a minor change in their subcellular distribution as assessed by cell immunostaining or no change as assessed by surface biotinylation. These results indicate that the response of cells to osmotic shock can involve changes both in transporter activity and location. The signal transduction pathways involved include neither PI 3-kinase nor the classical, osmotically-activated component, p38 MAP kinase.


Subject(s)
Adipocytes/metabolism , Epithelial Cells/metabolism , Monosaccharide Transport Proteins/metabolism , Muscle Proteins , Osmotic Pressure , 3T3 Cells , Adipocytes/cytology , Animals , Antimetabolites/pharmacokinetics , Biological Transport/physiology , Cell Membrane/metabolism , Deoxyglucose/pharmacokinetics , Epithelial Cells/cytology , Glucose/metabolism , Glucose Transporter Type 1 , Glucose Transporter Type 4 , Mammals , Mice , Rats , Saline Solution, Hypertonic/pharmacokinetics , Sorbitol/pharmacokinetics , Sucrose/pharmacokinetics
3.
Arq Gastroenterol ; 36(4): 220-6, 1999.
Article in English | MEDLINE | ID: mdl-10883315

ABSTRACT

Two experimental models were tried in young malnourished rats in order to study effect of an hyperosmolar challenge in the small intestine on the bi-directional fluxes of sodium. Weanling rats were fed with energy restricted diets. In model I 1 mL of NaCl 900 mOsm/kg was introduced in the small intestine of the rats and left from 5 up to 70 min, in order to determine the moment of higher net Na+ secretion, which occurred at 10 min. In model II, the bi-directional fluxes of Na+ and Cl- were studied using NaCl or mannitol 900 mOsm/kg under the effect of mecholil, atropine or 2-4 dinitrophenol, for 10 min. Mecholil decreased the Na+ absorption enhancing the net secretion. Control rats were used as reference. In the restricted diets animals occurred an increase of the net secretion stimulated by NaCl 900 mOsm/kg, and this effect was enhanced by mecholil. It is suggested that in malnutrition there is an impairment in Na- intestinal absorption.


Subject(s)
Hypertonic Solutions/pharmacokinetics , Intestinal Absorption/physiology , Nutrition Disorders/physiopathology , Sodium/metabolism , Animals , Disease Models, Animal , Hypertonic Solutions/administration & dosage , Male , Mannitol/administration & dosage , Mannitol/pharmacokinetics , Rats , Rats, Wistar , Saline Solution, Hypertonic/administration & dosage , Saline Solution, Hypertonic/pharmacokinetics
4.
Paciente crit. (Uruguay) ; 6(2): 91-102, 1993. ilus, tab
Article in Spanish | LILACS | ID: lil-215960

ABSTRACT

Se analiza la respuesta de un grupo de pacientes en estado de shock persistente, luego de la infusión de cloruro de sodio (NaCl) hipertónico y dextrán 70. Los pacientes en shock fueron clasificados en dos grupos: shock séptico y shock hipovolémico, de acuerdo a criterios internacionales. Se evaluó la respuesta a la infusión de los expansores, según los cambios de la presión arterial, diuresis y PaFiO2. Los pacientes en shock hipovolémico respondían en forma inmediata a la infusión de NaCI al 7,5 por ciento con mejoría de la presión arterial y diuresis y a elementos clínicos no cuantificables. La infusión de dextrán permitió que esta respuesta se mantuviera durante el período de seguimiento. Los pacientes con shock séptico que globalmente eran más graves que los del grupo anterior, mostraron una menor respuesta tensional, pero similar respuesta de la diuresis y clínica, durante el mismo período. La PaFiO2 no mostró empeoramiento durante la infusión de volumen realizada en períodos de tiempo muy breves. Cuando la PaFiO2 se estudió a las diez horas de la infusión se encontró una mejoría del índice de la función pulmonar, probablemente vinculado a la regresión del edema pulmonar


Subject(s)
Humans , Male , Female , Middle Aged , Dextrans , Dextrans/therapeutic use , Shock/drug therapy , Sodium Chloride , Sodium Chloride/therapeutic use , Saline Solution, Hypertonic/pharmacokinetics , Saline Solution, Hypertonic/therapeutic use , Hemodynamics , Shock, Septic/drug therapy
5.
Paciente Crit ; 6: 91-102, 1993. ilus, tab
Article in Spanish | BVSNACUY | ID: bnu-5686

ABSTRACT

Se analiza la respuesta de un grupo de pacientes en estado de shock persistente, luego de la infusión de cloruro de sodio (NaCl) hipertónico y dextrán 70. Los pacientes en shock fueron clasificados en dos grupos: shock séptico y shock hipovolémico, de acuerdo a criterios internacionales. Se evaluó la respuesta a la infusión de los expansores, según los cambios de la presión arterial, diuresis y PaFiO2. Los pacientes en shock hipovolémico respondían en forma inmediata a la infusión de NaCI al 7,5 por ciento con mejoría de la presión arterial y diuresis y a elementos clínicos no cuantificables. La infusión de dextrán permitió que esta respuesta se mantuviera durante el período de seguimiento. Los pacientes con shock séptico que globalmente eran más graves que los del grupo anterior, mostraron una menor respuesta tensional, pero similar respuesta de la diuresis y clínica, durante el mismo período. La PaFiO2 no mostró empeoramiento durante la infusión de volumen realizada en períodos de tiempo muy breves. Cuando la PaFiO2 se estudió a las diez horas de la infusión se encontró una mejoría del índice de la función pulmonar, probablemente vinculado a la regresión del edema pulmonar(AU)


Subject(s)
INFORME DE CASO , Humans , Male , Female , Middle Aged , Aged , Shock/drug therapy , Saline Solution, Hypertonic/pharmacokinetics , Saline Solution, Hypertonic/therapeutic use , Dextrans/therapeutic use , Dextrans/administration & dosage , Sodium Chloride/administration & dosage , Sodium Chloride/therapeutic use , Hemodynamics , Shock, Septic/drug therapy
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